21021760

素因数分解:

$2^6\times 5^1\times {\mathrm{179}}^1\times {\mathrm{367}}^1$

素因数の和:563

約数の個数: 56

約数和(自身を含む): 50474880

約数和(自身を除く): 29453120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 179, 320, 358, 367, 716, 734, 895, 1432, 1468, 1790, 1835, 2864, 2936, 3580, 3670, 5728, 5872, 7160, 7340, 11456, 11744, 14320, 14680, 23488, 28640, 29360, 57280, 58720, 65693, 117440, 131386, 262772, 328465, 525544, 656930, 1051088, 1313860, 2102176, 2627720, 4204352, 5255440, 10510880, 21021760]

約数ペア:

[(1, 21021760), (2, 10510880), (4, 5255440), (5, 4204352), (8, 2627720), (10, 2102176), (16, 1313860), (20, 1051088), (32, 656930), (40, 525544), (64, 328465), (80, 262772), (160, 131386), (179, 117440), (320, 65693), (358, 58720), (367, 57280), (716, 29360), (734, 28640), (895, 23488), (1432, 14680), (1468, 14320), (1790, 11744), (1835, 11456), (2864, 7340), (2936, 7160), (3580, 5872), (3670, 5728)]